Mailman needs to have different log file names in order to work properly with logrotate. A proper Logrotate conf file for Mailman needs a postrotate command in order to restart Mailman after log files have been rotated. See FAQ 04.007 for more details (http://www.python.org/cgi-bin/faqw-mm.py?req=edit&file=faq04.007.htp)
Here is a patch against v2.1.9
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+++ Logging/Logger.py 2007-04-06 21:11:18.600639072 -0400
--- Logging/Logger.py.old 2007-04-06 21:10:05.672725800 -0400
@@ -43,7 +43,6 @@
Otherwise, the file is created only when there are writes pending.
"""
self.__filename = os.path.join(mm_cfg.LOG_DIR, category)
+ self.__filename += '.log'
self.__fp = None
self.__nofail = nofail
self.__encoding = LOG_ENCODING or sys.getdefaultencoding()
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